Number of Grams in a Cup

The number of grams in a cup depends on what you have in a cup. Depending on the density of the thing you are putting in a cup. A cup is measured in volume while a gram is measured in mass. Liquid measures weight 236 to 237 grams and dry measures are between 120 to 280 grams. However, you have to account for different densities of different things in dry weights.